Contactors control power circuit switching and allow automatic cutoff in response to a power failure.
Electric motor controller.
A motor controller is a device or group of devices that can coordinate in a predetermined manner the performance of an electric motor.
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Motor starters monitor voltage during startup to protect motors from damage.
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Motor switches provide on off control of pumps compressors manufacturing.
A motor controller might include a manual or automatic means for starting and stopping the motor selecting forward or reverse rotation selecting and regulating the speed regulating or limiting the torque and protecting against overloads and electrical faults.